Xiao Chen traveled through time and became the only male in the Zhenbei Palace. His father and brother were all loyal and died on the battlefield, and his grandmother forced him to marry six sisters-in-law to continue their relationship. Faced with the imperial court's seizure of power and the betrayal of traitorous ministers, Xiao Chen relied on his resourcefulness to angrily angrily angrily angrily the eunuch who passed the order in the mourning hall, take over the military power in the north, reorganize the military camp and win over the morale of the army. He teamed up with his sisters-in-law who had great skills to uncover the traitors in the army, cleansed the intelligence network of traitor Qin Song, killed corrupt officials and county guards, and gradually revealed the truth behind the death of his father and brother in battle. In the end, Xiao Chen forced Qin Song to plead guilty in public, killed his enemies to avenge his family, protected his sister-in-law and the Zhenbei Army, and started a counterattack legend.